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Jan. 24, 1928. 1,657,433

, K. FREY TURBOGENERATOR INSTALLATION Filed April 11. 1927 J9 id Patented Jan. 24, 1928.

UNITED STATES OFFICE.

KARL FREY, or ENNETBADEN, sWITzERLANmnssIGnon no A; G. nnown BOVERI & 0112., or BAIJEN, SWITZERLAND, A JOINT-STOCK COMPANY OF SWITZERLAND.

TURBO-GENERATOR INSTALLATI-ON.

Application filed April 11, 1:527, Serial No. isama ana in amay May 5, 1926.

This invention relates to turbo-generator installations of the type in which separate generators are driven respectively by high and low pressure steam turbines through which the steam is passed in series.

The general purpose of the invention is the provision of a construction in which the floor space is used to best advantage, the foundation construction is simplified and arranged in such fashion as to contribnteto its stability, and the steam connectionsto and between the turbines are arranged in such fashion that they eliminate lateral strains and contribute to freedom offlow.

Other'and further objectsof the invention will be pointed out or indicated hereinafter, orwill appear to one skilled'inthe art upon an understanding of the invention or its employment in practice. I

In the accompanying drawing, forming a part of this specification, '1 illustrate a construction embodying the-invention'jbut it is to be understood that certai-n variations; in the details vofthe a rran'ge'ment shownmay be made without departingjfromfthescope of the invention as defined in"the' appended vclaims. s v X l In the drawing, I Fig. 1 is a side elevational view of a turbogenerator installation looking atj th e high pressure side, and showi foundation insectionril le ig. 2 is a plan 'yiewi oft an'di it; Fig. 3f;i's a'n, bine en d-, portiohsiofjlthe foun d' shown in sectional lelevation'gf In largefsteamturbine units','

0.1: drive -respect1ve generators, 1t maybe" desirable to arrange the units in collateral association. With this collateral disposal, if both the turbines are connected to their generators in normal relationship, one of the units is likely to be substantially longer than the other, thus increasing the length of the floor area requisite for the set, and requiring also that the cross connecting pipes between the two turbines be run diagonally with respect to the longitudinal axis of the set. By virtue of the present invention these disadvantages are eliminated and the entire set maybe arranged within more closely circumscribed area with the foundation por= r I iniwjhiichthe steam is expanded from stop'valvegt con- .hi'ch the referencenumerals 10 and-11 designate respective generators arranged in collateral association and carried on foundation portions 12. The generator 10 is driven by 'a high pressure steam t-urbine14, and the enorator 11'by a low pressure steam tur ine 15 of the double flow type. Steam supply to the set is controlled by a valve ear housed in the valve casing-16. Inste'a of being disposed in normal relationship ,with respect to the valve casin'g'andthe generator wh ch it driyes, viz, withthegenerator at the low pressure ,en'd'of l'tilrbiiie, and the valve casingf at the high pressure endfthe high pressure" urbine isarrangedfwith-iits Inlet sh; s fe e tl ed'fi 1 'r' s' j di r- 'J rOX inateIyIQnt th tral ti'an s'ver'se ens of the lowfpifes shrfti rbin Asa resultt the {cross connection i pipe {17, for leading] steam I from the pressiirfitil'rh fpressure tui'hiiiefma ms ii -less s? gles to the longitudinal a es of both "pressure ransv 'tiei-alt' ttidth fo'f the' parasites-surprise g its generator affords sateen the low pr su f said ffurbine f r p alfe .f r within "tlie termii'ial'-'liniiit" of times ares-sure turbine. The steam supply lines to the valve casing are designated 18 and the connecting steam pipes between the valve casing and high pressure turbine are designated 19. The latter are arranged in symmetrical relationship with respect to the axis of the high pressure unit and extend substantially parallel thereto and, by virtue of the relationship of the valve casing and high pressureturbine, may be made of suitable length to give the desired flexibility in the connectron without involving an undesirable extensionof the overall length of the set. The

ca ing approximatel swig-511514? oward th a new the'low i it -.n fiz iii i illii i this? rollateml assembly of the generators ZllHl of the. turbines simplifies the foundation mush-nation and makes possible a foundation design in' which the portions under the rsp'eti'i'e'iinit-s a'iiord eaehother'a desirable lateral reinforcement or support, thug eontrihnting to stability and "requiring a min-'- imum are; n rnpuntfnnaterral foruthe foundatioiif The cros s connecting pipes 17 h etgveen the high and. low; presgure .turhines :ire prqyigied with; 31 customary-expansion i ns-. 1. irhiie iiispi n these pip s at rightangles to he longitudinal axis of the se t. pe1 ;1nit their; being, bffrniniimuin length.

nannie i igii i i wiinr new e Pa e diiel eiee e idiiwqe f t b Qntie fie i e i i s tn e le re ee 5i. panneruin lxyl ieh. they. are best hy the structurglsQhofli Ofiflhih high lowlpresls ure. tu rh iuee, collaterally "vilispqs ed generators having (Ii-lying connee- .thge lrhgii st 'end oi the high pressure turn new; 1

411g, in

pipe for passing exhauststeam from the high pi'efsul'e turbine to the low 1)!(:''? Hl( t tuiliiiiig said pipe extending at right angles Lnlhe iongitudinal axes of the turbines, a valve easingsupported on the foundation at the low n; ureenel0fthe high pressure turbine. and a steam inlet pipe extending leugituilinallv about the high presgure turbine and onner-t ing the ali-"e casing to the high prewzazre end thereof 3QAturb -geneintor installation onzpri=: ing, in eoinhimition collaterally disposed andjoiv. pressure tnrh'inee. the. latter )5 the clouhljel fion type, a stoain pipe ronnecting tg iiilet qfgthe low pressure turbine prpee; ending at right angiesjothe ion generatgSprrnnged respeetire'l at the igli presj me eiid'of the high pressure turbinegridihlldiv presence endof the lo'\ pressurgg'iuihiljiefzrnd inizlligngnent with the re s peeti' fvel'tiiirhifiizjs, t-l1e 't 17.rh ine s hating .(lririnqeonneetion'n ith respective geneintors. a yaj egagingdis sd new 10- pi'es'nre enri -nghipressurehn'hiiiein collateral 1-1 ln-tionglnplton lonipressurc curl of the lonpressure tUIl).1 l 1Q Il',i(l stezun inlet connection;

.hetxreenthelizilyi; easing and high pressure end pf the' h igh pressure turbine.

Ac/A- turhqgenerntor installation compris I 'c0n1binatio n, edllaterally disposed gelrieratbrsf, ajlgnv' pressure turbine in alignhint kx ith one thereof and having. driving -eonneetmnfltherew1th, a high pressu e turbine and v'alv' casing in collateral elation with the low pressure turb ne id high .preseureturhinehemg in alignment with the htlir gene iat qr and having driving conne g ,tron 'ther en'ith, steam pipe connections extending longitudinally of the high pressure turhine angi'conneting the high pre sure enrl thereof to the. "alve casing an l st am pipe connectionz; extending at right. angles to the axes oi both turbines-and connecting the exhaust'e'nd bf the high pressure turbine to the inlet oitlre low PICFFFHQ turbine.

In te'stiinony whereof I hav hereuntn 51ml scribed Iiiyfnanie this day of Min-uh A. D. 1927. zit Zurich. Switzerland.

' KARL FREY. 

